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UWB CMOS Monocycle Pulse Generator

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3 Author(s)
Zito, F. ; Dept. of Inf., Math., Electron. & Transp. (DIMET), Univ. of Reggio Calabria, Reggio Calabria, Italy ; Pepe, D. ; Zito, D.

A low-complexity fully integrated ultrawideband (UWB) monocycle pulse generator realized in 90-nm CMOS technology by ST-Microelectronics is presented. The circuit provides a monocycle pulse when activated by a negative edge of an external trigger signal provided by a microcontroller by exploiting the operating principle of nonlinear waveform shapers. This pulse generator represents a building block of an innovative wearable system-on-chip UWB radar on silicon for cardiopulmonary monitoring. On-chip measurements show that the pulse generator provides monocycle pulses with a duration time equal to 380 ps and a peak-to-peak amplitude of 660 mV (including the losses of the microprobes, cables, and electrostatic-discharge-protected pads), which are in very good agreement with the postlayout simulations. The power consumption is 19.8 mW from a 1.2-V power supply.

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Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:57 ,  Issue: 10 )